Achnanthidium thermale Rabenhorst, 1864 accepted as Crenotia thermalis (Rabenhorst) Wojtal (original description)
Amphora donkinii Rabenhorst, 1864 (original description)
Amphora normanii var. normani Rabenhorst, 1864 (original description)
Cocconeis scutellum f. stauroneiformis Rabenhorst, 1864 (original description)
Cymbella cuspidata var. naviculiformis Auerswald, 1864 (original description)
Eunotia exigua (Brébisson ex Kützing) Rabenhorst, 1864 accepted as Himantidium exiguum Brébisson ex Kützing, 1849 (new combination reference)
Nitzschiella L. Rabenhorst, 1864 (original description)
Pinnularia radiosa var. avenacea Rabenhorst, 1864 (original description)
Pinnularia rectangulata (Gregory) Rabenhorst, 1864 accepted as Navicula rectangulata Gregory, 1857 (new combination reference)
Rhoicosphenia curvata var. marina (Kützing) Rabenhorst, 1864 accepted as Gomphonema curvatum var. marinum Kützing, 1844 (new combination reference)
Stauroneis anceps f. gracilis Rabenhorst, 1864 (original description)
Surirella ovata var. salina (W.Smith) Rabenhorst, 1864 accepted as Surirella salina var. salina W. Smith, 1851 (new combination reference)
Surirella salina W.Smith, 1851 (new combination reference)